用大豆幼株离体茎进行不同处理后扦插繁殖，在合适条件下每个叶腋芽都可以繁殖成为一独立的植株。对其影响固素研究表明：不同大豆品种的发根率、发根数、根长和单位根重存在显著差异·０、１、３、５ｐｐｍ的萘乙酸处理离体茎，主要影响发根数，以３ｐｐｍ发根数最多。０、１２和２４ｈ的浸茎时间主要影响发根率，随浸茎时间增加，发根率增加．红黄壤、沙壤土和清水沙３种不同扦插基质对发根数和根长有显著影响。红黄壤的发根数较低而棍长较长。扦插繁殖的春大豆植株其单珠产量虽低于对照，但扦插繁殖植株和母株产量总和仍是对照植株的２～３倍，该方法成活率高，扦插植珠与母株具有相同遗传组成。对同时进行几项大豆遗传研究具有特别重要意义。 Soybean young plants in vitro stems after different treatments cutting propagation, under the right conditions, each leaf axillary buds can be multiplied into an independent plant. Studies on its effect on the content of solid hormone showed that the rooting rate, root number, root length and unit root weight of different soybean varieties were significantly different · 0,1,3,5ppm naphthaleneacetic acid treatment in vitro stems, mainly affecting the number of hair roots , 3ppm hair root number up. The immersion time at 0, 12 and 24h mainly affected the rate of rooting. With the increase of immersion time, the rate of rooting increased. Three kinds of cutting media, red-yellow soil, sandy loam soil and clear water sand, had significant effects on root number and root length. The reddish brown soil has a lower number of hair roots and a longer stick length. Although the single-bead yield of cuttings-grown spring soybean plants was lower than that of the control, the total of cuttage propagation and parental plants was still 2-3 times that of the control plants. The survival rate was high, and the cuttings had the same genetic composition as the parental plants . It is of special importance to conduct several soybean genetic studies at the same time.